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Meprobamate-induced fixed drug eruption.

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Meprobamate, a common anxiety medication, can rarely cause fixed drug eruption (FDE). This case highlights FDE from meprobamate, confirmed by a positive patch test, a diagnostic method not previously reported for this drug.

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Area of Science:

  • Dermatology
  • Pharmacology
  • Clinical Medicine

Background:

  • Meprobamate is a widely prescribed medication for anxiety disorders.
  • Fixed drug eruption (FDE) is a rare but significant adverse cutaneous drug reaction.
  • While meprobamate is generally safe, its potential to induce FDE warrants attention.

Observation:

  • A case report details a 22-year-old woman who developed FDE after initiating meprobamate for depression.
  • The patient presented with erythematous, pruriginous plaques on limbs and face, resolving after drug cessation.
  • Residual hyperpigmentation was noted post-lesion resolution.

Findings:

  • Patch testing was performed one month after symptom resolution.
  • The patch test results were positive for meprobamate, confirming it as the causative agent.
  • This is the first reported case of meprobamate-induced FDE with diagnostic confirmation via patch testing.

Implications:

  • This case underscores the importance of considering meprobamate as a potential cause of FDE.
  • Positive patch testing provides a definitive diagnostic method for meprobamate-induced FDE.
  • Clinicians should be aware of this rare adverse effect and consider patch testing for accurate diagnosis.